Thousand Oaks Dew Controller

Each heater output is controlled independently and has a full range of adjustment from 0-100%. This eliminates the problem of overheating or not reaching desired temperature regardless of heater size and combination. Green LED indicates unit is receiving power and also serves as a low power warning in "battery saver" mode. Each channel has it's own red LED indicator. Compared to competitive models, it's like having four units built into one box with advanced features. Unit is small and lightweight measuring 5" x 2.5" x 1" (127mm x 63 x 25). Supplied with 12' (3.65m) power cord and cigarette lighter adapter.

Dew Buster Dew Controller

Designed for those who want the best. Built tough to last a lifetime. Output jacks case mounted to prevent stress on circuit board. Short protected outputs can't be damaged by a heater fault. Two year warranty even covers damage from shorts and home-made heaters.

Keeps optics near air temperature to maximize telescope performance.

Doesn't waste battery power, applies very little heat while the telescope is cooling down, then increases heat as needed to maintain optics dew free

Celestron Dew Shields / Lens Shade

A Lens Shade/Dew Cap is a tube designed to wrap around the front end of your SCT telescope and reduce the amount of dew that builds up on the corrector plate. It also serves as a Len Shade by preventing stray light from falling on the corrector plate, which greatly improves contrast.

Celestron offers a complete line of rugged, but soft Foamex plastic lens shades that can be stored flat after usage. They are made from a thicker material that won’t crack under temperature extremes. The quality level is a step above all others as all material is sewn (not glued) for a long life.